Adjacent angles are angles that have a common ray coming out of the
vertexgoing between two other rays.Angle
AHF = FHG

Solution

Step 2:

Vertical
Angles a pair of angles are said to be vertical
if the angles share the samevertex
and are
bounded by the same pair of lines, but are opposite to each other. Such
angles are congruent and thus have equal measure.

Angle SHD = FHG

Solution

Step 3:

Supplementary
Angles a pair of
angles is supplementary if their measurementsadd
up to 180 degrees. Angle SHF = FHG

Solution

Step 4:

Complementary
Angles a pair of angles is complementary if
the sum of their angles is 90°. Angle AHF = FHG